A heat pump condenser contains this unique control device that switches the flow of refrigerant depending on heating or cooling mode:

A) Reversing valve B) Liquid line solenoid valve
C) Flow switch D) Bypass solenoid


A

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In a PT concrete slab-on-ground, the tendons are stressed from the

A) live ends. B) lower ends. C) upper ends. D) dead ends. E) any one of the above.

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Permits must be obtained from the government when these are disturbed:

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Which variable resistor is most likely used for a dash light dimmer control?

A) Rheostat B) Piezoelectric C) Potentiometer D) None of these

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